Cisco Sg3008 Manual
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Getting Started Window Navigation Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 11 1
Getting Started Window Navigation 12 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 1
2 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 13 Status and Statistics This section describes how to view device statistics. It covers the following topics: •System Summary •Viewing Ethernet Interfaces •Viewing Etherlike Statistics •Viewing GVRP Statistics •Viewing 802.1X EAP Statistics •Viewing TCAM Utilization •Health •Managing RMON •View Log System Summary See System Settings. Viewing Ethernet Interfaces The Interface page displays traffic statistics per port. The refresh rate of the information can be selected. This page is useful for analyzing the amount of traffic that is both sent and received and its dispersion (Unicast, Multicast, and Broadcast).
Status and Statistics Viewing Ethernet Inter fac e s 14 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 2 To display Ethernet statistics and/or set the refresh rate: STEP 1Click Status and Statistics > Interface. STEP 2Enter the parameters. •Interface—Select the type of interface and specific interface for which Ethernet statistics are to be displayed. •Refresh Rate—Select the time period that passes before the interface Ethernet statistics are refreshed. The available options are: -No Refresh—Statistics are not refreshed. -15 Sec—Statistics are refreshed every 15 seconds. -30 Sec—Statistics are refreshed every 30 seconds. -60 Sec—Statistics are refreshed every 60 seconds. The Receive Statistics area displays information about incoming packets. •To t a l B y t e s ( O c t e t s )—Octets received, including bad packets and FCS octets, but excluding framing bits. •Unicast Packets—Good Unicast packets received. •Multicast Packets—Good Multicast packets received. •Broadcast Packets—Good Broadcast packets received. •Packets with Errors—Packets with errors received. The Transmit Statistics area displays information about outgoing packets. •To t a l B y t e s ( O c t e t s )—Octets transmitted, including bad packets and FCS octets, but excluding framing bits. •Unicast Packets—Good Unicast packets transmitted. •Multicast Packets—Good Multicast packets transmitted. •Broadcast Packets—Good Broadcast packets transmitted. To clear or view statistics counters: •Click Clear Interface Counters to clear counters for the interface displayed. •Click View All Interfaces Statistics to see all ports on a single page.
Status and Statistics Viewing Etherlike Statistics Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 15 2 Viewing Etherlike Statistics The Etherlike page displays statistics per port according to the Etherlike MIB standard definition. The refresh rate of the information can be selected. This page provides more detailed information regarding errors in the physical layer (Layer 1), which might disrupt traffic. To view Etherlike Statistics and/or set the refresh rate: STEP 1Click Status and Statistics > Etherlike. STEP 2Enter the parameters. •Interface—Select the type of interface and specific interface for which Ethernet statistics are to be displayed. •Refresh Rate—Select the amount of time that passes before the Etherlike statistics are refreshed. The fields are displayed for the selected interface. •Frame Check Sequence (FCS) Errors—Received frames that failed the CRC (cyclic redundancy checks). •Single Collision Frames—Frames that were involved in a single collision, but were successfully transmitted. •Late Collisions—Collisions that have been detected after the first 512 bits of data. •Excessive Collisions—Number of transmissions rejected due to excessive collisions. •Oversize Packets—Packets greater than 2000 octets received. •Internal MAC Receive Errors—Frames rejected because of receiver errors. •Pause Frames Received—Received flow control pause frames. •Pause Frames Transmitted—Flow control pause frames transmitted from the selected interface. To clear statistics counters: •Click Clear Interface Counters to clear the selected interfaces counters.
Status and Statistics Viewing GVRP Statistics 16 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 2 •Click View All Interfaces Statistics to see all ports on a single page. Viewing GVRP Statistics The GVRP page displays information regarding GARP VLAN Registration Protocol (GVRP) frames that were sent or received from a por t . GVRP is a standards-based Layer 2 network protocol, for automatic configuration of VLAN information on switches. It was defined in the 802.1ak amendment to 802.1Q-2005. GVRP statistics for a port are only displayed if GVRP is enabled globally and on the port. See the GVRP page. To view GVRP statistics and/or set the refresh rate: STEP 1Click Status and Statistics > GVRP. STEP 2Enter the parameters. •Interface—Select the specific interface for which GVRP statistics are to be displayed. •Refresh Rate—Select the time period that passes before the GVRP statistics page is refreshed. The Attribute Counter block displays the counters for various types of packets per interface. •Join Empty—Number of GVRP Join Empty packets received/transmitted. •Empty—Number of GVRP empty packets received/transmitted. •Leave Empty—Number of GVRP Leave Empty packets received/ transmitted. •Join In—Number of GVRP Join In packets received/transmitted. •Leave In—Number of GVRP Leave In packets received/transmitted. •Leave All—Number of GVRP Leave All packets received/transmitted. The GVRP Error Statistics section displays the GVRP error counters. •Invalid Protocol ID—Invalid protocol ID errors. •Invalid Attribute Type—Invalid attribute ID errors.
Status and Statistics Viewing 802.1X EAP Statistics Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 17 2 •Invalid Attribute Value—Invalid attribute value errors. •Invalid Attribute Length—Invalid attribute length errors. •Invalid Event—Invalid events. To clear statistics counters: •Click Clear Interface Counters to clear the selected counters. •Click View All Interfaces Statistics to see all ports on a single page. Viewing 802.1X EAP Statistics The 802.1x EAP page displays detailed information regarding the EAP (Extensible Authentication Protocol) frames that were sent or received. To configure the 802.1X feature, see the 802.1X Properties page. To view the EAP Statistics and/or set the refresh rate: STEP 1Click Status and Statistics > 802.1x EAP. STEP 2Select the Interface that is polled for statistics. STEP 3Select the time period (Refresh Rate) that passes before the EAP statistics are refreshed. The values are displayed for the selected interface. •EAPOL Frames Received—Valid EAPOL frames received on the port. •EAPOL Frames Transmitted—Valid EAPOL frames transmitted by the port. •EAPOL Start Frames Received—EAPOL Start frames received on the port. •EAPOL Logoff Frames Received—EAPOL Logoff frames received on the port. •EAP Response/ID Frames Received—EAP Resp/ID frames received on the port. •EAP Response Frames Received—EAP Response frames received by the port (other than Resp/ID frames).
Status and Statistics Viewing TCAM Utilization 18 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 2 •EAP Request/ID Frames Transmitted—EAP Req/ID frames transmitted by the port. •EAP Request Frames Transmitted—EAP Request frames transmitted by the port. •Invalid EAPOL Frames Received—Unrecognized EAPOL frames received on this port. •EAP Length Error Frames Received—EAPOL frames with an invalid Packet Body Length received on this port. •Last EAPOL Frame Version—Protocol version number attached to the most recently received EAPOL frame. •Last EAPOL Frame Source—Source MAC address attached to the most recently received EAPOL frame. To clear statistics counters: •Click Clear Interface Counters to clear the selected interfaces counters. •Click Clear All Interface Counters to clear the counters of all interfaces. Viewing TCAM Utilization The device architecture uses a Ternary Content Addressable Memory (TCAM) to support packet actions in wire speed. TCAM holds the rules produced by applications, such as ACLs (Access Control Lists), Quality of Service (QoS), IP Routing and user-created rules. Some applications allocate rules upon their initiation. Additionally, processes that initialize during system boot use some of their rules during the startup process. To view TCAM utilization, click Status and Statistics > TCAM Utilization. The TCAM Utilization page shows the following fields: •Maximum TCAM Entries for IPv4 and Non-IP (Rules)—Maximum TCAM Entries available. •IPv4 Routing -In Use—Number of TCAM entries used for IPv4 routing.
Status and Statistics Health Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 19 2 -Maximum—Number of available TCAM entries that can be use d for IP v4 routing. •Non-IP Rules -In Use—Number of TCAM entries used for non-IP rules. -Maximum—Number of available TCAM entries that can be used for non- IP rules. Health See Health. Managing RMON RMON (Remote Networking Monitoring) is an SNMP specification that enables an SNMP agent in the device to proactively monitor traffic statistics over a given period and send traps to an SNMP manager. The local SNMP agent compares actual, real-time counters against predefined thresholds and generates alarms, without the need for polling by a central SNMP management platform. This is an effective mechanism for proactive management, provided that you have the correct thresholds set relative to your network’s base line. RMON decreases the traffic between the manager and the device because the SNMP manager does not have to poll the device frequently for information, and enables the manager to get timely status reports, because the device reports events as they occur. With this feature, you can perform the following actions: •View the current statistics (since the counter values were cleared). You can also collect the values of these counters over a period of time, and then view the table of collected data, where each collected set is a single line of the Histor y tab. •Define interesting changes in counter values, such as “reached a certain number of late collisions” (defines the alarm), and then specify what action to perform when this event occurs (log, trap, or log and trap).
Status and Statistics Managing RMON 20 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 2 Viewing RMON Statistics The Statistics page displays detailed information regarding packet sizes and information regarding physical layer errors. The information displayed is according to the RMON standard. An oversized packet is defined as an Ethernet frame with the following criteria: •Packet length is greater than MRU byte size. •Collision event has not been detected. •Late collision event has not been detected. •Received (Rx) error event has not been detected. •Packet has a valid CRC. To view RMON statistics and/or set the refresh rate: STEP 1Click Status and Statistics > RMON > Statistics. STEP 2Select the Interface for which Ethernet statistics are to be displayed. STEP 3Select the Refresh Rate, the time period that passes before the interface statistics are refreshed. The statistics are displayed for the selected interface. •Bytes Received—Number of octets received, including bad packets and FCS octets, but excluding framing bits. •Drop Events—Number of packets dropped. •Packets Received—Number of good packets received, including Multicast and Broadcast packets. •Broadcast Packets Received—Number of good Broadcast packets received. This number does not include Multicast packets. •Multicast Packets Received—Number of good Multicast packets received. •CRC & Align Errors—Number of CRC and Align errors that have occurred. •Undersize Packets—Number of undersized packets (less than 64 octets) received. •Oversize Packets—Number of oversized packets (over 2000 octets) received.